a{
    text-decoration: none;
}
.home-tool-bar {
    position: fixed;
    bottom: 70px;
    right: 0;
    z-index: 99;
}

.home-tool-bar .tool-item {
    position: relative;
    display: block;
    width: 82px;
    height: 90px;
    margin-top: -1px;
    background-color: #fff;
    border: 1px solid #f5f5f5;
    text-align: center;
}

.home-tool-bar .tool-item .icon {
    position: relative;
    width: 30px;
    height: 30px;
    margin: 0 auto 8px;
    padding-top: 18px;
}

.home-tool-bar .tool-item .icon img {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 30px;
    transition: opacity .3s;
}

.home-tool-bar .tool-item .icon .static {
    opacity: 1;
}

.home-tool-bar .tool-item .icon .hover {
    opacity: 0;
}

.home-tool-bar .tool-item:hover .hover {
    opacity: 1;
}

.home-tool-bar .tool-item .text {
    color: #757575;
    transition: color .3s;
    font-size: 14px;
}

.home-tool-bar .tool-item:hover .text {
    color: #ff6700;
}

.tool-item .pop-content {
    position: absolute;
    left: 0;
    top: 0;
    padding: 14px;
    background: #fff;
    border: 1px solid #f5f5f5;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s;
    transform: translateZ(0);
}

.tool-item .pop-content::before {
    right: -19px;
    border-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) #f5f5f5;
    z-index: 1;
}

.tool-item .pop-content::before,
.tool-item .pop-content::after {
    content: "";
    position: absolute;
    top: 21%;
    width: 0;
    height: 0;
    border-width: 10px;
    border-style: solid;
    overflow: hidden;
}

.tool-item .pop-content::after {
    right: -18px;
    border-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) #fff;
    z-index: 2;
}

.home-tool-bar .tool-item .pop-content img {
    display: block;
    width: 100px;
    height: 100px;
    margin: 6px auto;
}

.home-tool-bar .tool-item .pop-content .desc {
    display: block;
    width: 82px;
    margin: 14px auto 0;
    color: #757575;
    text-align: center;
}

.home-tool-bar .tool-item:hover .pop-content {
    transform: translate3d(-110%, 0, 0);
    opacity: 1;
    visibility: visible;
}

.home-tool-bar .backtop {
    margin-top: 14px;
    border-top: 1px solid #f5f5f5;
    visibility: hidden;
}

.home-tool-bar .backtop.active {
    visibility: visible;
}